Please enable JavaScript.
Coggle requires JavaScript to display documents.
Central Nervous System (Cerebellum (Cerebellar Peduncles (Middle Peduncle,…
Central Nervous System
Cerebellum
Function
Smooth and coordinate body movements with the help of other brain parts. Maintains posture and equilibrium.
-
Arbor Vitae
Looks like a tree, brings sensory and motor information to and from the cerebellum.
Cerebellar cortex
A three-layer cover, that covers the cerebellum.
-
-
Cerebrum
Lobes
-
-
Parietal Lobe
Sensory part of brain, receives info and processes it.
-
Frontal Lobe
Where we think, plan, make decisions, and initiate voluntary movement.
Gyrus
Precentral Gyrus
Primary motor cortex. Uses more cortex for face, tongue, and hands.
Postcentral Gyrus
Primary somatosensory cortex (skin, muscle, and joints). Sensitive to touch.
-
Wenicke Area
Located on the temporal lobe on the left hemisphere. Enables us to understand speech, read words, and name objects.
Tracts
-
Projection
Long tracts, they run down the spinal cord. Motor info descends, and sensory info ascends.
Association
Short tracts, they connect parts of the same hemisphere.
Brain Stem
-
Medulla Oblongata
Also has reticular formation nuclei. It is the lowest part of the brainstem and contains the cardiac, vasomotor, and respiratory control centers. Motor info descends, and sensory info ascends.
Pyramids
Cortex of precentral gyrus, there is motor output through pyramidal tracts.
-
Cranial Nerve Nuclei
A place where cranial nerves connect with the brain stem. Olfactory and optic cranial nerves do not go through the brainstem.
Midbrain
Cerebral Peduncles
Composed of pyramidal motor tracts, from the cerebrum to the spinal cord.
Corpora Quadrigemina
Superior Colliculi
Involved in visual reflexes, they are the top two colliculi.
Inferior Colliculi
Involved in auditory reflexes, they are the lower two colliculi.
Diencephalon
Thalamus
Composed of several nuclei. All sensory info that travels to the cortex goes through the thalamus, except olfaction. Can amplify or "tone down" signals.
Hypothalamus
Main visceral control center. Controls the autonomic nervous system with the help of gray matter in the brain stem. Controls the endocrine system. Regulates body temperature, hunger and thirst, and sleep and wake cycle. Involved in formation of memory.
Epithalamus
Where the pineal gland is found. It secretes melatonin, and prepares us for sleep.
Spinal Cord
Cauda Equina
Latin for horse's tail, they send and receive messages to and from the legs,feet, and pelvic organs.
Filum Terminale
Deepest of the meninges, it connects to the coccyx, and is made of fibrous tissue. It anchors the spinal cord.
-
-
-
CNS Protection
Meninges
-
Pia Mater
"Tender mother", this envelops the brain and spinal cord.
Dura Mater
"Tough mother", tough and made of dense fibrous connective tissue. Has two layers, the periosteal portion and the meningeal portion.
-
-
Dural Venous Sinuses
This space is made from separating the meningeal portion from the periosteal portion. There are seven major dural sinuses, and they drain oxygen-poor blood through the internal jugular veins back to the heart.